Add support for blocking files

Files are blocked if blocked_reason is non-NULL. This value is currently
not exposed publicly, instead a 404 will be returned.

Files are scanned using virustotal.com's public API if scanned is False.
Scans are performed by the fbin-scanner.py script. If a match is found,
blocked_reason is set to the payload received. Files that are not in
VT's database will be automatically submitted and the script will wait
for the scan to complete before continuing.

0 files changed, 0 insertions, 0 deletions